Preoperative and Postoperative Care Practice Questions

Q: Which of the following agents is of no value in the postoperative care of a hemophilic patient?

Clopidogrel. ### Explanation **Core Concept:** Hemophilia is a congenital bleeding disorder characterized by a deficiency of clotting factors (Factor VIII in Hemophilia A; Factor IX in Hemophilia B). The primary goal of postoperative care is to **maintain hemostasis** and prevent secondary hemorrhage. **Why Clopidogrel is the Correct Answer:** Clopidogrel is an **antiplatelet agent** that irreversibly inhibits the P2Y12 ADP receptor on platelets. In a hemophilic patient, the coagulation cascade is already compromised. Administering an antiplatelet drug like Clopidogrel would further impair primary hemostasis, significantly **increasing the risk of life-threatening bleeding**. It has no therapeutic value in managing hemophilia and is actually contraindicated in the perioperative period for these patients. **Analysis of Other Options:** * **Tranexamic Acid & Aminocaproic Acid (Options A & C):** These are **antifibrinolytic agents**. They inhibit plasminogen activation, thereby stabilizing clots. They are highly valuable in hemophilic patients, especially after dental extractions or mucosal surgeries, to prevent clot lysis. * **Factor VIII Cryoprecipitate (Option D):** Cryoprecipitate is rich in Factor VIII, von Willebrand factor, and fibrinogen. While recombinant Factor VIII concentrate is now the gold standard, cryoprecipitate remains a source of Factor VIII to correct the underlying deficiency and ensure surgical hemostasis. **High-Yield Clinical Pearls for NEET-PG:** * **Target Levels:** For major surgery in Hemophilia A, Factor VIII levels should be raised to **80-100%** preoperatively and maintained above 50% for 10-14 days postoperatively. * **Desmopressin (DDAVP):** Useful in **Mild Hemophilia A** as it releases endogenous Factor VIII stores; it is ineffective in Hemophilia B. * **Contraindication:** Avoid **IM injections** and **NSAIDs/Aspirin** in hemophilic patients due to the risk of hematomas and platelet dysfunction.

Q: A 35-year-old man with duodenal stump leak after partial gastrectomy is receiving central parenteral nutrition containing D25W and 4.25% amino acid solution. Which of the following is TRUE regarding essential fatty acid deficiency that can occur with hyperalimentation?

It causes dry, scaly skin with loss of hair.. ### Explanation **1. Why Option C is Correct:** Essential Fatty Acid Deficiency (EFAD) primarily involves a deficiency in **Linoleic acid** and **Linolenic acid**. These fatty acids are structural components of cell membranes and precursors to eicosanoids. When deficient, the skin's barrier function is compromised, leading to the classic clinical triad: **diffuse dry, scaly dermatitis (ichthyosis)**, **alopecia (hair loss)**, and **impaired wound healing**. In pediatric patients, it can also cause growth retardation. **2. Analysis of Incorrect Options:** * **Option A:** Fat emulsions (like soybean or safflower oil) provide the necessary linoleic acid. Administering these emulsions **once or twice weekly** is generally sufficient to prevent EFAD in patients on long-term TPN. * **Option B:** EFAD typically manifests after **2 to 4 weeks** of fat-free parenteral nutrition. It does not usually appear at the end of the first week because the body has some endogenous stores in adipose tissue. * **Option D:** EFAD is characterized by **thrombocytopenia** and anemia, not hypercholesterolemia. Biochemically, it is identified by an **increase in the Triene:Tetraene ratio (>0.4)**. This occurs because the body attempts to substitute missing essential fatty acids with Mead acid (a triene). **3. NEET-PG High-Yield Pearls:** * **The Biochemical Marker:** The most specific test for EFAD is a **Triene:Tetraene ratio > 0.4**. * **The Culprit:** High-glucose TPN (like D25W) exacerbates EFAD because high insulin levels inhibit lipolysis, preventing the release of stored essential fatty acids from adipose tissue. * **Prevention:** At least **2-4% of total caloric intake** should be provided as linoleic acid to prevent deficiency.

Q: Bacterial pyogenic parotitis affecting the parotid gland is most common after which of the following conditions?

Debilitation after major surgery. **Explanation:** **Acute Pyogenic Parotitis** (also known as "Surgical Mumps") is a bacterial infection of the parotid gland, most commonly caused by **Staphylococcus aureus**. **Why Option C is Correct:** The primary pathophysiology involves **retrograde migration** of oral flora into the parotid duct. This occurs in postoperative patients due to a combination of: 1. **Dehydration and Debilitation:** Reduced fluid intake or blood loss leads to decreased saliva production. 2. **Poor Oral Hygiene:** Common in critically ill or post-surgical patients. 3. **Anticholinergic Drugs:** Often used during anesthesia, these further suppress salivary flow (stasis). Saliva has mechanical cleansing properties and contains IgA; when flow is stagnant, bacteria ascend from the mouth into the gland. **Analysis of Incorrect Options:** * **A. Uveo-parotid fever (Heerfordt’s syndrome):** This is a manifestation of **Sarcoidosis** characterized by facial nerve palsy, parotid enlargement, and uveitis. It is granulomatous, not pyogenic. * **B. Mumps:** This is an **acute viral** infection (Paramyxovirus). While it is the most common cause of parotitis in children, it is not "pyogenic" (pus-forming). * **C. Administration of Iodine:** This can cause "Iodide mumps," a rare hypersensitivity reaction or sialadenopathy due to iodine accumulation in the gland, but it is not a bacterial infection. **High-Yield Clinical Pearls for NEET-PG:** * **Most common organism:** *Staphylococcus aureus*. * **Risk Factors:** Dehydration, malnutrition, and elderly patients on diuretics or antihistamines. * **Clinical Sign:** Pus may be seen exuding from **Stensen’s duct** (opposite the upper second molar) upon massaging the gland. * **Management:** Rehydration, intravenous antibiotics, and if an abscess forms, surgical drainage via a **Blair incision** (to avoid facial nerve injury).

Q: A 32-year-old female undergoes emergency laparotomy for perforation peritonitis. Which of the following is the surest sign of wound dehiscence?

Copious sero-sanguinous discharge. ***Copious sero-sanguinous discharge*** - An abrupt increase in **sero-sanguinous fluid** (often described as salmon-colored or pink-brown) soaking the dressing is the **surest clinical sign** of underlying fascial dehiscence. - This discharge represents peritoneal fluid leaking through the broken-down **fascial closure**, usually preceding full **evisceration**. - Typically occurs 5-10 days post-operatively and is the most specific early warning sign. *Rebound tenderness* - **Rebound tenderness** is a sign of **peritonitis** or intra-abdominal inflammation, which is related to the primary pathology (perforation) but not a direct sign of **fascial integrity loss**. - If present post-operatively, it usually indicates persistent or recurrent **intra-abdominal sepsis**, abscess, or ongoing peritonitis. *Hemorrhage* - **Hemorrhage** (frank bleeding) indicates vascular injury or a defect in **hemostasis**, not mechanical failure of the fascial layer itself. - Significant wound bleeding is common in the immediate post-operative period but is not the specific pathognomonic finding for **wound dehiscence**. *Hypotension* - **Hypotension** is a non-specific sign of severe systemic compromise, such as **sepsis**, **hypovolemic shock**, or ongoing internal bleeding. - Although a major dehiscence could lead to sepsis and subsequent hypotension, it is not the initial or most **specific indicator** of the structural breakdown of the wound.

Q: Which of the following statements regarding the given image is false?

Caused by use of local anesthesia. ***Caused by use of local anesthesia*** - The image depicts **wound dehiscence with evisceration**, a serious surgical complication where the wound edges separate, and abdominal contents protrude. - This condition is **not caused by local anesthesia**, which primarily affects nerve conduction to block pain sensation. Local anesthesia has no direct role in wound healing or structural integrity. *Faulty surgical technique* - **Surgical technique** is a major factor in wound dehiscence. Improper closure, excessive tension on suture lines, or inadequate tissue approximation can lead to wound breakdown. - Such **technical errors** compromise the integrity of the surgical repair, increasing the risk of the wound rupturing. *Distension of the abdomen* - **Increased intra-abdominal pressure** due to abdominal distension (e.g., from ileus, ascites, or coughing/vomiting) can place significant stress on the surgical incision. - This **elevated pressure** can cause sutures to pull through tissues or the wound edges to separate, contributing to dehiscence. *Associated with wound infection* - **Wound infection** significantly impairs the healing process by causing inflammation, tissue breakdown, and weakening of the wound edges. - The presence of **infection** increases the risk of dehiscence by delaying collagen synthesis and promoting enzymatic degradation of tissues.

Q: A patient after abdominal surgery presents with fever, chills, rigors along with pain in right hypochondrium, right shoulder along with Hoover's sign. Abdominal CT of the patient is given. What is the most likely diagnosis?

Subphrenic abscess. ***Subphrenic abscess*** - The CT scan shows a **fluid collection (abscess)** with a septated appearance located beneath the diaphragm, consistent with a **subphrenic abscess** - **Hoover's sign** (inspiratory lag of the affected hemidiaphragm) is pathognomonic for subphrenic pathology - **Referred shoulder pain** occurs due to diaphragmatic irritation transmitted via the phrenic nerve (C3, C4, C5 - "keeps the diaphragm alive") - Classic post-operative complication following **abdominal surgery**, especially upper abdominal procedures - CT shows characteristic **subdiaphragmatic location** with gas-fluid level *Liver abscess* - Would present with hepatomegaly and tender liver on examination - CT would show an **intraparenchymal liver lesion**, not a subdiaphragmatic collection - Does not typically cause Hoover's sign or diaphragmatic involvement *Acute cholecystitis* - Presents with **Murphy's sign**, not Hoover's sign - CT would show **gallbladder wall thickening, pericholecystic fluid**, not a subdiaphragmatic collection - Shoulder pain less prominent; typically right subscapular pain *Right lower lobe pneumonia* - Would show **pulmonary infiltrates** on imaging, not an intra-abdominal fluid collection - Respiratory symptoms (cough, dyspnea) would be more prominent - Does not explain the abdominal CT findings showing subdiaphragmatic collection

Q: What does the image show? (AIIMS Nov 2018)

Pneumatic compression stockings. ***Pneumatic compression stockings*** - The image clearly shows sleeves wrapped around the patient's legs, connected by **tubes to a device** that inflates and deflates these sleeves, characteristic of **intermittent pneumatic compression (IPC)**. - IPC devices are used to prevent **deep vein thrombosis (DVT)** by promoting venous blood flow through cyclical compression. *Anti-shock garment* - An anti-shock garment (e.g., **military anti-shock trousers (MAST)**) is a full-body or lower-body suit that applies circumferential pressure to the lower extremities and abdomen to auto-transfuse blood to the core organs in cases of **hypovolemic shock**. - The device in the image covers only the legs and appears to be designed for intermittent, not sustained, compression. *Alginate dressings* - **Alginate dressings** are topical wound care products derived from seaweed, used to absorb exudate from wounds. - They are used directly on wounds and do not involve mechanical devices or full limb coverage like that shown. *Compression stockings (Unna boot)* - While an Unna boot is a type of **sustained compression bandage** (paste bandage) for leg ulcers, it provides continuous, static compression and is typically left in place for days. - The device in the image is clearly an **active, intermittent mechanical system** with a pump, not a static bandage.

Q: The image on the left shows a procedure. What is the procedure associated with this image?

Seldinger technique. ***Seldinger technique*** - The image illustrates the classic steps of the **Seldinger technique**, involving initial puncture with a needle, insertion of a guidewire through the needle, removal of the needle, and then threading a catheter or introducer sheath over the guidewire. - This technique is widely used for safe percutaneous access to blood vessels and other hollow organs for various medical procedures, such as **central venous catheterization** or **arterial line insertion**. *Amplatzer insertion* - **Amplatzer devices** are used to close septal defects (e.g., ASD, VSD) and patent ductus arteriosus, representing the device itself and its deployment, not the general access technique shown. - The image depicts a general method for vessel access, not the specific insertion and deployment of a cardiovascular occluder. *Venous cut down* - **Venous cutdown** involves surgical incision and direct visualization of a vein to insert a catheter, which is a different, more invasive procedure than the percutaneous access shown. - The depicted method uses a needle and guidewire for blind percutaneous access rather than direct surgical exposure. *Aubaniac technique* - The **Aubaniac technique** is a specific method for central venous access, typically involving the subclavian vein, but it still utilizes a variant of the Seldinger principle for guidewire insertion. - While related to central venous access, "Aubaniac technique" is a more specific application, whereas the image demonstrates the fundamental and broadly applicable **Seldinger technique**.

Question 1

Which of the following agents is of no value in the postoperative care of a hemophilic patient?

Accepted Answer

Clopidogrel

Answer

Tranexamic acid

Answer

Aminocaproic Acid

Answer

Factor VIII Cryoprecipitate

Question 2

An obese 50-year-old woman undergoes a laparoscopic cholecystectomy. In the recovery room she is found to be hypotensive and tachycardic. Her arterial blood gases reveal a pH of 7.29, partial pressure of oxygen of 60 kPa, and partial pressure of CO2 of 54 kPa. What is the most likely cause of this woman's problem?

Accepted Answer

Alveolar hypoventilation

Answer

Acute pulmonary embolism

Answer

CO2 absorption from induced pneumoperitoneum

Answer

Pulmonary edema

Question 3

What is the anticoagulant of choice for prophylaxis of venous thromboembolism in a patient undergoing cancer surgery?

Accepted Answer

Low molecular weight heparin

Answer

Heparin sulfate

Answer

Protamine sulfate

Answer

Warfarin

Question 4

A 35-year-old man with duodenal stump leak after partial gastrectomy is receiving central parenteral nutrition containing D25W and 4.25% amino acid solution. Which of the following is TRUE regarding essential fatty acid deficiency that can occur with hyperalimentation?

Accepted Answer

It causes dry, scaly skin with loss of hair.

Answer

It occurs if soybean oil is given only once weekly.

Answer

It is usually noted at the end of the first week.

Answer

It is accompanied by hypercholesterolemia.

Question 5

Bacterial pyogenic parotitis affecting the parotid gland is most common after which of the following conditions?

Accepted Answer

Debilitation after major surgery

Answer

Uveo-parotid fever

Answer

Mumps

Answer

Administration of iodine

Question 6

A 32-year-old female undergoes emergency laparotomy for perforation peritonitis. Which of the following is the surest sign of wound dehiscence?

Accepted Answer

Copious sero-sanguinous discharge

Answer

Rebound tenderness

Answer

Hypotension

Answer

Hemorrhage

Question 7

Which of the following statements regarding the given image is false?

Accepted Answer

Caused by use of local anesthesia

Answer

Faulty surgical technique

Answer

Distension of the abdomen

Answer

Associated with wound infection

Question 8

A patient after abdominal surgery presents with fever, chills, rigors along with pain in right hypochondrium, right shoulder along with Hoover's sign. Abdominal CT of the patient is given. What is the most likely diagnosis?

Accepted Answer

Subphrenic abscess

Answer

Liver abscess

Answer

Acute cholecystitis

Answer

Right lower lobe pneumonia

Question 9

What does the image show? (AIIMS Nov 2018)

Accepted Answer

Pneumatic compression stockings

Answer

Anti-shock garment

Answer

Alginate dressings

Answer

Compression stockings (Unna boot)

Question 10

The image on the left shows a procedure. What is the procedure associated with this image?

Accepted Answer

Seldinger technique

Answer

Amplatzer insertion

Answer

Venous cut down

Answer

Aubaniac technique

Preoperative and Postoperative Care — MCQs

Preoperative and Postoperative Care — MCQs

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